... at 35.4°C. The aqueous solution appears strong alkalinity. On exposure to air it easily absorbs moisture, carbon dioxide, and gradually ... : White powdered crystal, true specific gravity 2.533 (20°C),bulk density 0.90min.Easily soluble in water, maximum solubility ... at 35.4°C. The aqueous solution appears strong alkalinity. On exposure to air it easily absorbs moisture, carbon dioxide, and gradually ...